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ATE353184T1 - METHOD AND SYSTEM FOR DETECTING THE POSITION OF A MOBILE RADIO TERMINAL IN A CELLULAR RADIO SYSTEM - Google Patents

METHOD AND SYSTEM FOR DETECTING THE POSITION OF A MOBILE RADIO TERMINAL IN A CELLULAR RADIO SYSTEM

Info

Publication number
ATE353184T1
ATE353184T1 AT02250711T AT02250711T ATE353184T1 AT E353184 T1 ATE353184 T1 AT E353184T1 AT 02250711 T AT02250711 T AT 02250711T AT 02250711 T AT02250711 T AT 02250711T AT E353184 T1 ATE353184 T1 AT E353184T1
Authority
AT
Austria
Prior art keywords
mobile station
otd
uncertainty
values
base stations
Prior art date
Application number
AT02250711T
Other languages
German (de)
Inventor
Timo Rantalainen
Jani Moilanen
Original Assignee
Nokia Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nokia Corp filed Critical Nokia Corp
Application granted granted Critical
Publication of ATE353184T1 publication Critical patent/ATE353184T1/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
    • G01S5/02—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
    • G01S5/10—Position of receiver fixed by co-ordinating a plurality of position lines defined by path-difference measurements, e.g. omega or decca systems
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S1/00—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith
    • G01S1/02—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith using radio waves
    • G01S1/022—Means for monitoring or calibrating
    • G01S1/026—Means for monitoring or calibrating of associated receivers

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Position Fixing By Use Of Radio Waves (AREA)

Abstract

A method and system for estimating the location of a mobile station in a cellular radio network having a reference base station and a plurality of neighboring base stations capable of communicating with the mobile station. At the beginning of the E-OTD measurements, the mobile station may be provided with the expected OTD values in the reference base station site, possibly instead of RTD values of the neighboring base stations, in order to make it possible for the mobile station can calculate the uncertainty in the measured OTD due to the unknown location of the mobile station. In an alternative scenario the network provides the mobile station the expected OTD values in the current location of the mobile station, and the estimated uncertainty of those values. When the uncertainty is greater than a predetermined value, the mobile station makes the E-OTD measurements based on the SCH bursts. When the uncertainty is smaller than the predetermined value, the mobile station makes the measurements based on normal/dummy bursts, and/or aligns the time window for taking samples from signals received from the neighboring base stations. <IMAGE>
AT02250711T 2001-02-02 2002-02-01 METHOD AND SYSTEM FOR DETECTING THE POSITION OF A MOBILE RADIO TERMINAL IN A CELLULAR RADIO SYSTEM ATE353184T1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US09/776,405 US6665540B2 (en) 2001-02-02 2001-02-02 Method and system for locating a mobile terminal in a cellular radio network

Publications (1)

Publication Number Publication Date
ATE353184T1 true ATE353184T1 (en) 2007-02-15

Family

ID=25107288

Family Applications (1)

Application Number Title Priority Date Filing Date
AT02250711T ATE353184T1 (en) 2001-02-02 2002-02-01 METHOD AND SYSTEM FOR DETECTING THE POSITION OF A MOBILE RADIO TERMINAL IN A CELLULAR RADIO SYSTEM

Country Status (8)

Country Link
US (1) US6665540B2 (en)
EP (1) EP1229756B1 (en)
JP (1) JP4236409B2 (en)
CN (1) CN1233179C (en)
AT (1) ATE353184T1 (en)
AU (1) AU9729101A (en)
DE (1) DE60217939T2 (en)
RU (1) RU2002102717A (en)

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Also Published As

Publication number Publication date
EP1229756B1 (en) 2007-01-31
JP4236409B2 (en) 2009-03-11
US6665540B2 (en) 2003-12-16
CN1233179C (en) 2005-12-21
EP1229756A2 (en) 2002-08-07
RU2002102717A (en) 2003-08-27
EP1229756A3 (en) 2003-12-17
DE60217939D1 (en) 2007-03-22
CN1370023A (en) 2002-09-18
US20020107028A1 (en) 2002-08-08
DE60217939T2 (en) 2008-01-03
JP2002262330A (en) 2002-09-13
AU9729101A (en) 2002-08-08

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